Where to start!? If you booked through a travel agent, ask her/him for some too - that should get you started. Do you have any specific questions or concerns? That might help narrow things down. Make sure to read through the brochure, including all the fine print - make sure to get a brochure if you haven't already. Lots of good info in there!

Brochures? On the Princess website, look at the bottom left of the screen. There is a "brochures" link. You have to register a user name with them to access it. Most of the cruise line sites have something similar. Or you could go to a local travel agent and pick up some literature.